SUBNET.IM

Allocated but unannounced space

Every block here was allocated or assigned by a regional internet registry, and none of them appeared in any routing table we collected at our last snapshot — neither as a route of their own, nor covered by a larger announcement, nor carved up into more specifics.

“Unannounced” does not mean “unused”

Plenty of allocated space is deliberately kept off the public internet: private interconnects, lab and lawful-intercept ranges, networks reachable only inside one operator, and space held in reserve. Some of it is announced somewhere our collectors cannot see, which is a limit of our vantage points rather than a fact about the block.

It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today. Nothing on this page means a block is unallocated, available, or free to announce.

Browse by registry

Browse by country

Countries with the most unannounced blocks, largest first.

Unannounced blocks in Taiwan

321 blocks match, ordered by prefix.

Allocated but unannounced blocks, 101 to 150 of 321
PrefixAddressesRegistryCountryAllocated
192.72.252.0/24256APNICTW27th Jun 1990
192.72.3.0/24256APNICTW9th Dec 1992
2001:44f0::/324.3B × /64APNICTW9th Dec 2005
2001:4508::/324.3B × /64APNICTW23rd Jan 2006
2001:7fa:1::/4865.5k × /64APNICTW23rd Oct 2002
2001:c58::/324.3B × /64APNICTW27th Aug 2002
2001:ca0::/324.3B × /64APNICTW2nd Oct 2002
2001:d48::/324.3B × /64APNICTW23rd May 2003
2001:ded:c000::/4865.5k × /64APNICTW23rd Oct 2023
2001:df0:bf40::/4865.5k × /64APNICTW19th May 2022
2001:df2:5480::/4865.5k × /64APNICTW9th Dec 2019
2001:df2:5740::/4865.5k × /64APNICTW28th Apr 2023
2001:df2:5741::/4865.5k × /64APNICTW25th Mar 2024
2001:df2:5742::/47131k × /64APNICTW10th Apr 2025
2001:df3:6e00::/4865.5k × /64APNICTW23rd Jul 2016
2001:df4:8a00::/4865.5k × /64APNICTW2nd Sept 2016
2001:df4:9d00::/4865.5k × /64APNICTW26th Mar 2018
2001:df6:3f80::/4865.5k × /64APNICTW12th Mar 2021
2001:df6:4780::/4865.5k × /64APNICTW18th Mar 2021
2001:dfe::/324.3B × /64APNICTW17th Mar 2026
202.140.160.0/198.2kAPNICTW7th Apr 2011
202.144.208.0/204.1kAPNICTW26th May 2005
202.148.212.0/23512APNICTW28th Jun 2005
202.148.214.0/23512APNICTW28th Jun 2005
202.148.218.0/23512APNICTW28th Jun 2005
202.174.16.0/204.1kAPNICTW26th Oct 2005
202.39.112.0/204.1kAPNICTW16th Dec 1994
202.5.8.0/221kAPNICTW24th Sept 2002
203.119.94.0/24256APNICTW2nd Sept 2010
203.160.144.0/204.1kAPNICTW13th Apr 2006
203.18.156.0/23512APNICTW31st Jul 2025
203.188.192.0/204.1kAPNICTW1st Dec 2005
203.207.0.0/204.1kAPNICTW19th Dec 2000
203.55.118.0/24256APNICTW27th Jun 2019
203.77.96.0/198.2kAPNICTW30th Apr 1999
203.80.169.0/24256APNICTW27th Jun 2019
203.84.144.0/212kAPNICTW20th Jan 2006
203.91.0.0/198.2kAPNICTW12th May 2005
210.244.128.0/1816.4kAPNICTW15th Jan 1999
210.244.224.0/198.2kAPNICTW15th Jan 1999
210.62.128.0/198.2kAPNICTW29th Aug 1997
210.62.160.0/204.1kAPNICTW29th Aug 1997
210.62.248.0/212kAPNICTW29th Aug 1997
210.67.128.0/204.1kAPNICTW4th Sept 1996
211.76.192.0/198.2kAPNICTW30th Jun 2000
211.76.224.0/204.1kAPNICTW30th Jun 2000
211.78.192.0/204.1kAPNICTW30th Jun 2000
223.165.0.0/23512APNICTW25th Sept 2025
223.26.6.0/23512APNICTW17th Aug 2010
2400:1300::/324.3B × /64APNICTW1st Apr 2011